AN INVESTIGATION INTO THE GRADATION VARIABILITY OF AGGREGATE USED IN BASES

THIS RESEARCH PROJECT DEALT WITH QUALITY CONTROL OF GRADATION OF BASE COURSE MATERIAL USED UNDER CONCRETE PAVEMENT. THE PRIMARY PURPOSE OF THE RESEARCH WAS TO ESTABLISH QUIDELINES FOR DETECTING CHANGE IN QUALITY (GRADATION) BETWEEN THE AGGREGATE PRODUCERS PLANT AND THE INSITU COMPACTED HIGHWAY BASE. THE AGGREGATE STUDY DEALT WITH INDIANA SPECIFICATION NO. 53, PUGMILL MIXED CRUSHED LIMESTONE AGGREGATE. VARIATION BETWEEN SAMPLING POINTS WAS STUDIED BY OBTAINING SAMPLES AT FOUR LOCATIONS, PUGMILL FEEDER BELT, PUGMILL OUTPUT, ON THE ROADWAY BEFORE COMPACTION AND ON THE ROADWAY AFTER COMPACTION. THE VARIABILITY OF THE MATERIAL WAS EVALUATED ON A STATISTICAL BASIS. THE RESULTS OF THE STUDY INDICATED THAT THE BEST PLANT LOCATION CONTROL POINT FOR SAMPLING WAS THE PUGMILL FEEDER BOELT AND THE BEST ROADWAY LOCATION WAS THE BEFORE COMPACTION LOCATION.

• Supplemental Notes:
  • HPR-1(9) PART II
• Corporate Authors:

  Purdue University/Indiana Department of Transportation JHRP

  Purdue University, School of Civil Engineering
  West Lafayette, IN  United States  47907-1284
• Authors:
  • Parson, J T
• Publication Date: 1972-7

Media Info

• Pagination: 138 p.

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregates; Base course (Pavements); Compaction; Concrete pavements; Guidelines; Quality control; Statistical analysis
• Old TRIS Terms: Gradation
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00217508
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Final Rept
• Files: TRIS, USDOT
• Created Date: May 7 1974 12:00AM